Home / 28,117.76-42,181.28-10,589.12

Finding the Fourth Proportional to 28,117.76, 42,181.28 and 10,589.12

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Solution

The fourth proportional to 28,117.76, 42,181.28 and 10,589.12 is: 15,885.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,117.76 : 42,181.28 = 10,589.12 : x
  2. Step 2: Convert to fraction form
    28,117.76/42,181.28 = 10,589.12/x
  3. Step 3: Cross multiply
    28,117.76x = 42,181.28 × 10,589.12
  4. Step 4: Simplify right side
    28,117.76x = 446,662,635.67
  5. Step 5: Solve for x
    x = 446,662,635.67/28,117.76
  6. Step 6: Final answer
    x = 15,885.43

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.